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Astrophotography

Posted: Sat Aug 15, 2015 2:10 pm
by Peter Connan
Image

Image

D750 and tamron 15-30mm f2.8 are a magic combination for starry nights!

Re: What gear do you have...

Posted: Sat Aug 15, 2015 6:18 pm
by nan
indeed ^Q^

and with HDR :-?

Re: What gear do you have...

Posted: Sat Aug 15, 2015 6:59 pm
by Peter Connan
No HDR Nan

Just a single exposure each.

Re: What gear do you have...

Posted: Sat Aug 15, 2015 7:21 pm
by BluTuna
Details please O/

400 rule and flash to get the bushes illuminated?

Re: What gear do you have...

Posted: Sat Aug 15, 2015 7:22 pm
by nan
\O

Re: What gear do you have...

Posted: Sat Aug 15, 2015 9:13 pm
by Peter Connan
BluTuna wrote:Details please O/

400 rule and flash to get the bushes illuminated?
This "rule" has more iterations than any other I know. I have heard 600 and 500 before, now 400...

30 seconds (so you could say 450 rule :-0 ) @f2.8 and lots of ISO (one at 5000, the other at 8000). Light painting was done by shining a fairly powerful LED headlamp into the palm of my hand, reflecting onto the tree/bush. I have tried flash before, but found it way too powerful. Perhaps it can be used by reflecting or using ND filters though.

Re: What gear do you have...

Posted: Sat Aug 15, 2015 9:20 pm
by nan
your rule made a superb result ^Q^ ^Q^

will try... next time in the Kgalagadi... but don't have a headlamp... only a torche... but will try \O

Re: What gear do you have...

Posted: Sat Aug 15, 2015 9:44 pm
by BluTuna
Thanks PC! I'll be trying some of that in the KTP next month!

For the benefit of those who don't know what the 400 rule is...

600 rule for full frame, 400 for crop frame (those are the numbers I have heard).

Divide the lens focal length into the number to give the maximum time in seconds for the exposure without blurring the stars.

Re: What gear do you have...

Posted: Sun Aug 16, 2015 11:24 am
by Flutterby
Great pics. \O

Re: What gear do you have...

Posted: Sun Aug 16, 2015 12:44 pm
by PRWIN
Peter I normally shoot at iso 6400 at 30 sec at 4.5, I like to go light, if it does and then bring it back down in photoshop, that way I know I will not get grain in the dark area,s